Service difficulty report · Warning Light · Boeing 737322

Difficulty date
August 26, 2003
Submitted
September 30, 2003
Operation
Air carrier
Aircraft
N336UA
Make and model
Boeing 737322
Aircraft serial
24240
Aircraft time
45,030 hours, 24,773 cycles
Engine
Ge CFM56*
Part
Warning Light
Condition
Illuminated
Location
Cockpit
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON CLIMB OUT OF OMA CREW GOT BLEED TRIP OFF LIGHTS & ANOTHER WING BODY OVERHEAT INDICATION. CAUSED BY FAILURE OF PRE-COOLER PNEUMATIC VALVE DUE TO PLUGGED ORIFICE. REPLACED PRE-COOLER VALVE. HIGH STAGE VALVE AND PRECOOLER VALVE SENSOR WERE REPLACED AS A PRECAUTIONARY MEASURE. RAN ENGINE AND OPERATIONAL CHECK OF THE SYSTEM TESTED NORMAL.